315958681843109 has 2 divisors, whose sum is σ = 315958681843110. Its totient is φ = 315958681843108.

The previous prime is 315958681843099. The next prime is 315958681843201. The reversal of 315958681843109 is 901348186859513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 269701068166084 + 46257613677025 = 16422578^2 + 6801295^2 .

It is a cyclic number.

It is not a de Polignac number, because 315958681843109 - 2⁴⁰ = 314859170215333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315958681842109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157979340921554 + 157979340921555.

It is an arithmetic number, because the mean of its divisors is an integer number (157979340921555).

Almost surely, 2^{315958681843109} is an apocalyptic number.

It is an amenable number.

315958681843109 is a deficient number, since it is larger than the sum of its proper divisors (1).

315958681843109 is an equidigital number, since it uses as much as digits as its factorization.

315958681843109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 223948800, while the sum is 71.

The spelling of 315958681843109 in words is "three hundred fifteen trillion, nine hundred fifty-eight billion, six hundred eighty-one million, eight hundred forty-three thousand, one hundred nine".